For what it's worth, even after some training none of the phones in my office seem to pick up their owner's voice rather than someone else telling their own pho

For what it's worth, even after some training none of the phones in my office seem to pick up their owner's voice rather than someone else telling their own phone to run a search (we're all mid 30s male). My phone rarely listens to me until I hold down the home button but one guy I know, who has a slow, deep voice, triggers Google to start listening in normal conversation all the time.